@misc{indiciae66d642090350,
  title = {A procedure for generating differential "sample" responding without different exteroceptive stimuli.},
  author = {Karen M Lionello-DeNolf and Peter J Urcuioli},
  year = {2003},
  doi = {10.1901/jeab.2003.79-21},
  url = {https://pubmed.ncbi.nlm.nih.gov/12696739/},
  note = {Source identifier: 12696739}
}